Closure-locking means.



G. J. LJUNGGREN.

CLOSURE LOGKIILG MEANS. APPLICATION FILED AUG. 31, 1910.

994,91 3, Patented May 30, 1911.

V YINVENTDQ M llj THE NORRIS Fsrsns co., wnsnmoron, u. c.

unrrnn snares Parana amen CARL J. LJUNGGREN, 0F PROVIDENCE, RHODEISLAND.

CLOSURE-LOOKING .MEANS.

Application filed August 31, 1910.

To all whom it may concern:

Be it known that I, CARL J. LJUNGGREN, a subject of the King of Sweden,residing at Providence, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements in C10-sure-Locking Means, of which the following is a specification.

My invention relates to closure locking means adapted for use in vaults,guns, port holes, etc., and embodies certain features of constructiondisclosed in my pending patent application Serial No. 451,444 filedSept. 2, 1908.

The objects of my invention are those commonly sought in this type ofstructures, and particularly to distribute the strain of the parts, tocompensate for wear, and to generally strengthen the structure.

To the above and other ends my invention consists of such features,combinations, and details of construction as are set forth in theappended claims.

In the accompanying drawings which form a part of this specificationFigures 1 and 2 are rear and side elevations respectively of the novelplug or closure member, Fig. 3, a rear end view of the stationarymember, Fig. 4, a section on line m w of Fig. 3, Fig. 5, a rearelevation of the closure member locked in the stationary member, andFig. 6, a partial section on g y of Fig. 5 showing the closure member inside elevation.

In the drawings like reference characters indicate like parts throughoutthe views.

In its present form of embodiment my invention consists of a plug, door,or closure member A adapted to cooperate with a breech or amb B. Themechanism for supporting, inserting, rotating, and withdrawing themember A forms no part of this invention and is well known in the art,therefore is not herein set forth.

The member A of cylindrical form is provided with a plurality ofangularly arranged interspaced segments O. Each segment comprises aplurality of radially graduated stepped portions D, E, F, which extendlongitudinally of the body. The front faces (Z, 6, f, of the portions D,E, F, are in the same plane and form a shoulder. The stepped portionsare preferably provided Specification of Letters Patent.

Patented May 36, 1911.

Serial No. 579,953.

with a series of transversely disposed steps of gradually lesseningradii toward the rear of the member A, and whose outer or peripheralfaces 65, e, f are plane surfaces or flat, and whose rear faces (Z 6 F,are in this instance in alinement with each other but in pitchedrelation to the body.

The stationary member herein shown consists of a collar B fixed in thewall H in any desired manner, inclosing a substantially cylindricalorifice I provided with a circumferential series of radially graduatedlongitudinally disposed entrance channels J, K, L, respectivelycorresponding with the stepped portions D, E, F. In the orifice are aplurality of longitudinally disposed graduated channeled portions M, N,0, whose respective seats m, n, 0, are preferably arcuate, transverselyinclined, and pitched, as well as of gradually diminishing radiirearwardly. These channels are in alinement with each other, and formshoulders or abutments m, a, 0, for the rear faces (Z 6 f respectivelyof the stepped portions D,E, F. The parts A and B are thus interengaged.The member A, disposed as illustrated in Fig. 2, is introduced in themember B from right to left as shown in Fig. 6. The stepped portions D,E, F, pass through channels J, K, L respectively, whereupon the member Ais turned in the direction of the arrow shown in Fig. 5 bringing theportions D, E, F into the channeled portions M, N, 0 respectively. Theplane faces d, e, f register in the arcuate seats m, n, 0. The rearfaces (Z 6 f come into frictional engagement with the abutments m, n, 0.The shoulder formed by the faces cl, 6, f bears against the internal endface P of the member.

What I claim is 1. In a device of the type set forth, the combinationwith a stationary member, of a closure body, and a segment upon the bodycomprising a plurality of radially graduzftted portions provided withflat peripheral aces.

2. In a device of the type set forth, the combination with a stationarymember, of a closure body and a segment upon the body comprising aplurality of radially graduated portions provided with fiat peripheralfaces and with rear pitched faces.

. nel and a closure member Within the sta- 3. In a device of the typeset forth, the with flat peripheral faces adapted to seat in combinationof a hollow stationary member the transversely disposed channels.provided With longitudinally disposed chan- In testimony whereof I haveafliXed my neled portions, each channeled portion being signature inpresence of tWo Witnesses. provided With a transversely disposed chan-CARL J. LJUNGGREN.

Witnesses:

LEONARD WV. HORTON,

tionary member and radially graduated I-IoRATIo E. BELLoWs.

portions upon the closure member provided Copies of this patent may beobtained for five'cents each, by addressing the Commissioner of Iatents,Washington, D. C.

